(1B) The product $(a+b)(c+d)$
Practice
Expand and simplify.
*Write your answers with powers of $x$ in descending order. $\left(\square x^2 \pm \square x \pm \square\right)$
$\left(x+2\right)\left(x-3\right)$
$\left(x-6\right)\left(x+6\right)$
$\left(-x+3\right)\left(6-x\right)$
$\left(-x+7\right)\left(6-x\right)$
$\left(5+x\right)\left(-x+4\right)$
$\left(-5+x\right)\left(x-6\right)$
$\left(5-x\right)\left(3+x\right)$
$\left(5-x\right)\left(1-x\right)$
$\left(-8x+3\right)\left(-2x+1\right)$
$\left(x-1\right)\left(9x+5\right)$
$\left(x-1\right)\left(-2+5x\right)$
$\left(-2x+3\right)\left(4+3x\right)$
$\left(-6+x\right)\left(-5x+6\right)$
$\left(7+2x\right)\left(4x+7\right)$
$\left(3-7x\right)\left(1+9x\right)$
$\left(4+3x\right)\left(-3+8x\right)$